Why is my 2020 Highlander showing a maintenance required light?

Toyota Highlander Fourth Generation (2020-present)

Error Codes

medium

Difficulty

low

Severity

3 min read

599 words

Problem Statement

Learn how to diagnose and address the Maintenance Required light on your 2020 Toyota Highlander, including symptoms, diagnostic steps, and required tools.

Affected Component

Maintenance System

Symptoms

•"Maintenance Required" light illuminated on the dashboard.
•No other warning lights appearing (e.g., Check Engine light).
•No noticeable changes in vehicle performance (if maintenance is overdue).

Diagnostic Steps

1
Check Maintenance Schedule.
2
Identify Last Maintenance.
3
Verify Engine Oil Level and Condition.
4
Inspect Other Fluids.
5
Check for Recalls or Technical Service Bulletins (TSBs).

Solution

💡 Expert Tip

For complex repairs like this, consider taking photos at each step. This helps if you need to reverse a step or consult with a mechanic. Also, keep all removed parts organized - you may need to reference them during reassembly.

Verification

After completing the repair, verify that the issue has been resolved:

✓Test the affected component to ensure it functions correctly
✓Check for any error codes or warning lights
✓Monitor the vehicle for a few days to ensure the issue does not recur

Prevention Tips

To prevent this issue from occurring again:

•Follow the manufacturer's recommended maintenance schedule
•Address warning signs early before they develop into major issues
•Use quality parts and fluids recommended for your vehicle
•Keep detailed records of all repairs and maintenance

Tools & Equipment Required

•Owner’s manual
•Automotive grade oil dipstick
•Rags for cleaning
•OBD-II scanner (optional, for deeper diagnostics)

Related Faults

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Solution

Understanding the Maintenance Required Light in a 2020 Toyota Highlander

The "Maintenance Required" light on your 2020 Toyota Highlander is an indicator that is programmed to remind you of regular maintenance intervals, such as oil changes, filter replacements, and other scheduled maintenance tasks. Here’s how to diagnose and address this issue.

Tools Required:

Owner’s manual
Automotive grade oil dipstick
Rags for cleaning
OBD-II scanner (optional, for deeper diagnostics)

Repair Instructions:

Step 1: Perform Required Maintenance

Change Engine Oil and Filter:
- Gather the necessary supplies: new oil (check owner’s manual for specifications), oil filter, oil catch pan, and a wrench.
- Lift the vehicle using a jack and secure it with jack stands.
- Remove the oil drain plug and allow the old oil to drain completely.
- Replace the oil filter using an oil filter wrench.
- Reinstall the drain plug and refill the engine with new oil through the oil filler cap.
Inspect and Replace Air Filter:
- Open the hood and locate the air filter box.
- Remove the clips or screws securing the air filter cover.
- Take out the old air filter and install a new one, ensuring it fits snugly.
Inspect Other Fluids:
- Check and top off other fluids as needed (coolant, transmission fluid, brake fluid, power steering fluid).
Check Tire Pressure:
- Verify that all tires are inflated to the recommended PSI as listed in the owner’s manual or on the driver’s side door jamb.

Step 2: Reset the Maintenance Light

Turn the Ignition On:
- Ensure the vehicle is in the "ON" position without starting the engine.
Navigate to the Menu:
- Use the controls on the steering wheel to navigate to the "Settings" or "Maintenance" menu on the multi-information display.
Reset the Maintenance Reminder:
- Locate the "Maintenance Reset" option and follow the prompts to reset the maintenance light. Confirm the reset when prompted.
Turn Off the Ignition:
- Turn off the vehicle and then restart it to check if the maintenance light is still illuminated.

Conclusion

If the "Maintenance Required" light remains on after performing maintenance and resetting the light, it is advisable to have the vehicle checked by a professional technician. There may be other underlying issues that require diagnosis. Regular maintenance is crucial for the longevity and performance of your vehicle, so ensure you stay on top of your service schedule.